A flexible and highly selective non-enzymatic H2O2 sensor based on silver nanoparticles embedded into Nafion
| Autor: | Mehrdad Gholami, Bryan D. Koivisto |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Physics and Astronomy Substrate (chemistry) 02 engineering and technology Surfaces and Interfaces General Chemistry Chronoamperometry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Amperometry Silver nanoparticle 0104 chemical sciences Surfaces Coatings and Films Electrochemical gas sensor Dielectric spectroscopy chemistry.chemical_compound chemistry Chemical engineering Nafion Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Applied Surface Science. :112-118 |
| ISSN: | 0169-4332 |
| Popis: | A simple and super selective electrochemical sensor based on carbon microfibers CµF coated with Nafion (Naf) and silver nanoparticles composite (CµF/Ag NPs-Naf) to detect hydrogen peroxide is proposed. Nafion was used as an ionic conductive substrate on the surface of CµF and silver nanoparticles (Ag NPs) were electrochemically deposited on the CµF. The sensor showed an excellent detection performance toward H2O2. Field emission scanning electron microscopy (FESEM) and energy dispersive x-ray analysis (EDX) were used to confirm the formation of silver nanoparticles on the carbon microfibers under Nafion matrix. The electrocatalytic behaviors of this sensor were also studied by cyclic voltammetry (CV), chronoamperometry and electrochemical impedance spectroscopy (EIS). Using amperometric method and under optimal conditions, a fast response of |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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